123 第一章 取力器的主要技术参数······················································································································125 第一节 QH50 取力器的截面图···············································································································125 第二节 取力器的主要技术参数··············································································································126 第三节 QH50 取力器的结构特点············································································································127 第二章 取力器的工作原理······························································································································128 第一节 行车取力与停车取力··················································································································128 第二节 气路系统的工作原理··················································································································129 第三章 取力器的注意事项及故障排除方法···································································································131 第一节 注意事项······································································································································131 第二节 常见故障及排除方法··················································································································131 第四章 取力器的拆解与组装 （样箱QH50 取力器的拆解······························································································································132 第二节 取力器的组装······························································································································137 第三节 加装取力器·······